16
16
HCD-EP404
6-2. Block Diagrams
TUNER/TAPE DECK Section
: FM
: AM
• Signal Path
• R-CH is omitted due to same as L-CH.
: PB(TAPE)
: REC(TAPE)
15
7
8
1
22
Q103
FM OSC
BUFFER
Q102
BAND
SWITCH
Q101
AMP
BPF
FM
ANT
L104
AM ANT
D105
T101
AM OSC
L102
FM RF
D103
D104
L103
FM OSC
F102
10.7MHz
T102
X101
10.7MHz
X102
7.2MHz
DA-IN
PLL-CE
ST
A
TION
STEREO
DA-IN
STEREO
DI
PLL-CE
CL
STATION
R-CH
TUNER
L-CH
TC102
TC101
FM FREQUENCY
COVERAGE
AM FREQUENCY
COVERAGE
AM TRACKING
FM TRACKING
F103
450kHz
IC701
REC/PB SWITCH
IC702
ALC,
REC/PB AMP
Q718
R-CH
L-CH
(RECORD/PLAYBACK)
R-CH
R-CH
(PROTECT (FWD) DETECT)
(HALF SWITCH)
Q705
REC/PB
SWITCH
Q701
REC/PB
SWITCH
Q703
AMP GAIN
CONTROL
Q719
ALC
CONTROL
BIAS
TRAP
Q720,721
CAPSTAN/REEL
MOTOR DRIVE
T701
BIAS OSC
9V
Q716,717
REC BIAS
SWITCH
M
(CAPSTAN/REEL)
Q722,723
TRIGGER
PLUNGER DRIVE
(TRIGGER PLUNGER)
R-CH
R-CH
R-CH
R-CH
R-CH
(MODE SWITCH)
D305
D308
D703
D701
D702
TL-CH
TR-CH
RL-CH
RR-CH
(ERASE)
SWITCHING
ISS SWITCHING
Q724
TAPE PLAY DETECT
SENSOR
Q711
REC AMP
Q713
PB AMP
Q707
MUTING
Q715
BIAS OSC
2
DI
CL
STA_B+
2SS
1SS
SW601
BEAT CUT